APPENDIX B: Interface specification
INTERFACE SPECIFICATION
1.
EDR1640/920 can be controlled by external devices through
Pin assignment
1 2 3 4 5
6 | 7 | 8 | 9 |
|
|
|
| DVR |
| HOST | |
PIN |
| NAME | PIN # | NAME | |
1 |
| FREE | 1 | FREE | |
2 |
| TXD | 2 | RXD | |
3 |
| RXD | 3 | TXD | |
4 |
| FREE | 4 | FREE | |
5 |
| SIGNAL GROUND | 5 | SIGNAL GROUND | |
6 |
| FREE | 6 | FREE | |
7 |
| FREE | 7 | FREE | |
8 |
| FREE | 8 | FREE | |
9 |
| FREE | 9 | FREE | |
RS-485 pin assignment
Both
Pin 1: GND
Pin 3: RS485 + (A)
Pin 6: RS485 - (B)
1 2 3 4 5 6 7 8
Illustration: contact side
2. Interface settings
For the RS232/485 port, 6 different speeds are available: 1200, 2400, 4800, 9600, 19200 and 38400 baud. Define the port settings in the RS232/RS485 menu.
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